chore: uiv2 docz custom page (#1511)

* feat: Customized Docz Layout

* manually apply padding into playground

* fix playground bug -- sticky items

* fix window

* remove specifc tailwind style for docz

platform/ui/tailwind.config.js

@@ -166,6 +166,9 @@ module.exports = {
       '48': '12rem',
       '56': '14rem',
       '64': '16rem',
+      '72': '18rem',
+      '80': '20rem',
+      '250px': '250px',
     },
     backgroundColor: theme => theme('colors'),
     backgroundPosition: {